diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/ethtool/netlink.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h index 3753787ba233..744b3ab966b0 100644 --- a/net/ethtool/netlink.h +++ b/net/ethtool/netlink.h @@ -112,6 +112,32 @@ static inline void ethnl_update_u8(u8 *dst, const struct nlattr *attr, } /** + * ethnl_update_bool() - update bool from NLA_U8 attribute + * @dst: value to update + * @attr: netlink attribute with new value or null + * @mod: pointer to bool for modification tracking + * + * Use the u8 value from NLA_U8 netlink attribute @attr to set bool variable + * pointed to by @dst to false (if zero) or 1 (if not); do nothing if @attr is + * null. Bool pointed to by @mod is set to true if this function changed the + * logical value of *dst, otherwise it is left as is. + */ +static inline void ethnl_update_bool(bool *dst, const struct nlattr *attr, + bool *mod) +{ + u8 val; + + if (!attr) + return; + val = !!nla_get_u8(attr); + if (*dst == val) + return; + + *dst = val; + *mod = true; +} + +/** * ethnl_update_bool32() - update u32 used as bool from NLA_U8 attribute * @dst: value to update * @attr: netlink attribute with new value or null |